I wrote this courses with the intention of showing how the various parts of a Variable Frequency Drive (VFD) work and how they are integrated to make an operating system. It starts with a review of AC and DC theory that is applicable to the way that an Inverter (an Learn More>>
Overview This short course provides general but pertinent information on inverter duty motors. This course is intended for engineers in general and can be helpful for electrical engineers as well. It provides general information about inverter duty motors and re Learn More>>
Overview Over half of all electrical energy consumed in the U.S. is used by electric motors. Energy savings amounting to many times the initial cost of a motor can be realized by selecting an energy-efficient motor for a new application. Learn More>>
Overview A common misconception within industry has been to equate an energy reduction or conservation program with the concept of turning off equipment and shutting down processes. Instead, the program of energy management challenges plant staff to produce... Learn More>>
An alternating current generator, or AC generator, produces an alternating current, which means the voltage produced alternately reverses from positive to negative polarity, producing a corresponding change in the direction of current flow. Learn More>>
The intention of this course is to show how many types of motors are turned on and off. A number of different AC motors are looked at, and ways to start and stop them are addressed. Reversing techniques are also addressed. Then various Electronic techniques for con Learn More>>
Overview The two most common motor classes are synchronous and induction motors. Synchronous motors are more efficient than induction motors, but are more expensive and complicated and typically have a shorter life span. This course covers fundamentals of... Learn More>>
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